For the Inventor, By the Inventor

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Philadelphia, PA, United States of America

Esb Incorporated

USPTO Granted Patents = 63

Trademarks = 2

Forward Citations = 780

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64 inventors (with patents filed for the assignee):

Philip A Bernstein (7 out of 36 patents)

James P Coffey (6 out of 17 patents)

Ralph H Feldhake (4 out of 6 patents)

4. El Sayed Megahed (4 out of 4 patents)

5. Alan E Varker (4 out of 10 patents)

6. Terry G Messing (3 out of 8 patents)

7. Jack C Sklarchuk (3 out of 3 patents)

8. Harold Nickolas Honer (3 out of 3 patents)

9. Joseph F Szabo (3 out of 3 patents)

10. Robert W Johnson (3 out of 7 patents)

11. William J Raddi (3 out of 3 patents)

12. Jeffrey S Leeson (2 out of 9 patents)

13. Isaac Levy (2 out of 5 patents)

14. John Werth (2 out of 15 patents)

15. Patrick J Spellman (2 out of 9 patents)

Core Competencies:

Porous Dip Tube

Battery Electrodes

Emergency Lighting Systems

Alkaline Cell Separator

Electrochemical Cells

Ground Fault Detection

Battery Charger Control

Pressure Vent Systems

Lead-Acid Storage Battery

Cardiac Pacer Technology

Primary Alkaline Cells

Sodium-Sulfur Batteries

63 patents: Sort by Forward Citations

1. 4414168 - Process for manufacturing a porous dip tube (1983-11-08),

2. 4358892 - Method of producing battery and electrolytic cell electrodes (1982-11-16),

3. 4255746 - Emergency lighting and fire detector system (1981-03-10),

4. 4253927 - Material for an alkaline cell separator and a process of making (1981-03-03),

5. 4252872 - Granulated lead oxides with teflon (1981-02-24),

6. 4224736 - Process for sealing electrochemical cells (1980-09-30),

7. 4215189 - Electrochemical battery employing a latex bonded lead dioxide electrode (1980-07-29),

8. 4206398 - Method of and apparatus for detecting ground faults in isolated power (1980-06-03),

9. 4206275 - Material for an alkaline cell separator and a process of making (1980-06-03),

10. 4200830 - Series resonant battery charger and control therefor (1980-04-29),

11. 4199754 - Circuit for an emergency lighting and fire detector system (1980-04-22),

12. 4191806 - Pressure vent for a sealed primary cell (1980-03-04),

13. 4164016 - Current sensing system (1979-08-07),

14. 4145648 - Polarity indicator for battery charger (1979-03-20),

15. 4131637 - Grafted polymeric material and process for preparing (1978-12-26),

ESB Incorporated is a leading global technology company specializing in software development, data analytics, and digital transformation solutions. With over 20 years of experience, we provide innovative and scalable technology solutions to clients across various industries. Our expertise includes custom software development, cloud computing, Internet of Things (IoT), artificial intelligence, and cybersecurity. At ESB Incorporated, we are committed to delivering high-quality solutions that exceed client expectations and drive business growth.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

63 Patents

#31 in Philadelphia, PA

#218 in Pennsylvania

#5,537 in US

#11,205 in the World

Philadelphia, PA, United States of America

Esb Incorporated

Forward Citations = 780

64 inventors:

Philip A Bernstein (7 out of 36 patents)

James P Coffey (6 out of 17 patents)

Ralph H Feldhake (4 out of 6 patents)

4. El Sayed Megahed (4 out of 4 patents)

5. Alan E Varker (4 out of 10 patents)

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